CHAPTER 2 — Analog and Binary Signals

Everyone knows that computers are "digital"
and that they use "binary" numbers.
You probably have some idea of
what these terms mean.
But we need to be clear about their precise meaning
and to be clear about why computers are digital.

Chapter Topics:

Binary signals

Analog signals

Advantages of Binary

Bits

Noisy signals

Study these topics carefully if
you want to know what is really going on with computers.